# N4183X: 1974 Rockwell International S-2R

- Status: Valid registration
- Airframe: [Rockwell International S-2R](https://openairdocs.org/model/rockwell-international-s-2r) (registry code 7630202, 1 seats)
- Engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016)
- Serial number: 1944R
- Year built: 1974
- Type: Fixed wing single engine
- Engine type: Turbo-prop
- Airworthiness: Restricted, agriculture and pest control
- Airworthiness date: April 8, 1974
- Certificate issued: June 19, 2013
- Expires: June 30, 2029
- Mode S code: A4F4AF
- Registered owner: [Nish Robert M](https://openairdocs.org/faa-owner/NISH%20ROBERT%20M)
- Location: [Spearman, TX](https://openairdocs.org/faa-place/TX/Spearman)
- Owner type: Individual
- Owner's area on the map: 36.2190° N, 101.2047° W: Placed by OpenAirDocs at the center of ZIP code 79081, within about 15 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4183X
- Page: https://openairdocs.org/aircraft/N4183X

From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination. The registry lists only the engine series, so ADs for every Pratt & Whitney R1340 model are included.

## ADs that may apply (OpenAirDocs): 0 in force

### Matched by airframe (Rockwell International S-2R)

None in force.

### Matched by engine (Pratt & Whitney R1340 series)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB MKC90LA079](https://openairdocs.org/ntsb/MKC90LA079), Apr 3, 1990: Rockwell S-2R (N4183X), Des Arc, AR, substantial damage. Probable cause: FAILURE OF THE ENGINE FUEL PUMP.

## FAA accident and incident reports (2)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Accident 19900403007469A](https://openairdocs.org/incident/19900403007469A), Apr 3, 1990: Ayres S2RR3SRESTD (N4183X), Des Arc, AR, Substantial damage. Engine lost power on liftoff. Landed. Ran off end dirt runway into a ditch. Fuel pump had failed.
- [Incident 19780314015879I](https://openairdocs.org/incident/19780314015879I), Mar 14, 1978: Ayres S2R (N4183X), Des Arc, AR, Minor damage. Ag pilot hit a soft, muddy spot during takeoff. Aircraft nosed up.

## Service difficulty reports

None filed for this aircraft. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

## STCs that may be installed (OpenAirDocs)

None matched to this aircraft's models.

## Related

- Other Rockwell International S-2R aircraft: https://openairdocs.org/model/rockwell-international-s-2r/aircraft.md
- The Pratt & Whitney R1340 series engine: https://openairdocs.org/engine/pratt-whitney-r1340-series.md

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